baber/WOPTO huggingface dataset:
Patent CA-2092950-A1 (CA)
Inventor: YOUNG WILLARD A
IPC: G02F1/17
Filed: 1993-03-30
Abstract: Presented is a device and method for providing a means of driving capacitive cells, such as those comprising suspended particle light valve windows, with a squarewave voltage signal at a select frequency with high efficiency and low power requirements. The invention uses an inductive circuit in parallel withthe capacitive load of the capacitive cell, a dc voltage source, and a fast switching means connected to timely control the polarity of the voltage source to the capacitive cell.
Patent CA-2094136-A1 (CA)
Title: Blunt tip surgical needle
Inventor: MCINTOSH CHARLES L
IPC: A61B17/04
Filed: 1991-10-30
Abstract: A surgical needle (10) for use in suturing non-cutaneous soft tissues of the body. The surgical needle includes a needle shaft (11) and a needle tip (12) formed of a rigid material suitable for use inside tire body. The needle tip has a body portion (14) integrally formed with and extending from the needle shaft and is tapered along its length. The needle tip is further provided with a blunt head (16) which together with the body portion defines a continuously smooth outer surface lacking any sharp cutting edges. The blunt head is adapted to penetrate muscle and fascia, muscle alone, adipose, pericostal tissue and other non-cutaneous soft tissues of the body while at the same time preventing skin penetration of the gloved hand of an operator.
Patent CA-2094971-A1 (CA)
Title: Switching Power Supply
Inventor: INOU KIYOHARU
IPC: H02M3/28
Filed: 1993-04-27
Abstract: A square waveform voltage is supplied to a second output circuit of a switching power supply.  The second output circuit utilizes a FET, and by controlling the width of a pulse chopped from the square waveform voltage, obtains a direct current output voltage having a set value.  However, if there is a time delay in a control signal for driving the FFT on/off, fast switching operations cannot be followed and controlled.          Also, due to this delay in the control signal, the width of the pulse is limited, and it is difficult to obtain a high secondary output voltage.  In the present invention, by providing an auxiliary power supply and a synchronizing signal generator for generating a synchronizing signal having a special waveform, a switching power supply can be realized in which the delay time of the control signal is reduced, and a high secondary output voltage can be obtained.
Patent CA-2097035-A1 (CA)
Title: Spacer for reinforcing elements
Inventor: BRECHBUEHLER FRITZ
IPC: E04C5/20
Filed: 1993-05-26
Abstract: Abstract of the Disclosure The  spacer  for reinforcing elements in concrete constructions  comprises a profiled beam with a number of  bearers slipped thereon.  Each one of said bearers is in the form of an A in the lateral view and is pro-vided  in  its upper portion with a transversal web in order  to  form  an  inserting  opening for said beam. Said beam has a double-T profile having a web which is provided at its foot end with a larger foot flange and in  its  upper half with a transversal flange having a somewhat  greater  length than the inner width of said inserting opening at that point, and whose head serves as a supporting surface for said reinforcing elements.       Such  a spacer provides a great stability and can be manufactured with relatively little expenditure and material.  Moreover, the upper portion of said bearers serves as an abutment for a precise layout of said re-inforcing elements.     (SE/as 06.05.93)
Patent CA-2097785-A1 (CA)
Title: Tamper evident seal
Inventor: GAETA STEPHEN A
IPC: B65D77/20
Filed: 1993-06-04
Abstract: This invention relates to a tamper evident inner seal for use on bottles, jars and other types of containers. More specifically, this invention provides a means for rendering a heat or adhesive sealed liner tamper evident by enabling the liner to tear upon removal or opening, while providing a peelable seal that does not leave seal residuals attached to the container.
Patent CA-2097998-A1 (CA)
Title: Access control
Inventor: AVARNE SIMON A B
IPC: G07F7/10
Filed: 1993-06-08
Abstract: ABSTRACT OF THE DISCLOSURE            Access Control A plurality of portable tokens are issued e.g. for authenticating payment instructions within an electronic banking network.   Each token requires entry of a respective password in order to operate and becomes locked if a number of incorrect password entries are made.   Each token also stores a respective cryptographic key and a random number generator.   In order to unlock a locked token it outputs a random number and also encrypts that number under its respective key but does not output the result of the encryption.   The random number is transmitted by the user to a central authority which stores the keys for all tokens.   The authority encrypts that number under the respective key and returns the result of the encryption to the user of the token.   The returned number is entered into the token and if it agrees with the result of the internal encryption the token is unlocked.
Patent CA-2098900-A1 (CA)
Title: Polymerization of acetylenes
Inventor: DRENT EIT
IPC: C08F4/60
Filed: 1993-06-21
Abstract: A process for the polymerization of acetylenically unsaturated compounds by contacting the monomer(s) under polymerization conditions with a catalyst system obtainable by combining a) a source of cations of one or more Group VIII metals b) a bidentate ligand, containing phosphorus, arsenic and/or antimony and c) a source of anions.
Patent CA-2099214-A1 (CA)
Title: Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts
Inventor: KUEBER FRANK
IPC: B01J31/38
Filed: 1993-06-25
Abstract: A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I   (see formula I) in which, in the preferred form, M1 is Zr or Hf, R1 and R2 are halogen or alkyl, R3 is alkyl, R4 to R12 are alkyl or hydrogen and R13 is a (substituted) alkylene or heteroatom bridge. The metallocenes, in particular the zirconocenes, produce polymers of very high molecular weight, in the case of prochiral monomers polymers of very high molecular weight, very high stereotacticity and very high melting point, at high catalyst activities in the industrially particularly interesting temperature range between 50 and 80°C. In addition, reactor deposits are avoided by means of supported catalyst systems.
Patent CA-2103153-A1 (CA)
Title: Suction-type clamp
Inventor: MESSINGER JULES
IPC: F16B47/00
Filed: 1993-03-15
Abstract: ABSTRACT OF THE DISCLOSURE      The suction-type clamp consists essentially of three parts, i.e. a diaphragm, a pressure ring and a cover.  At the centre of the diaphragm there is a pin which joins the cover to the diaphragm in the manner of a press-stud and permits the cover to rotate in relation to the diaphragm.  Between the cover and the diaphragm there is a pressure ring which is secured to be integral in rotation with the diaphragm by cams fitted to the latter.  The upper edge of the pressure ring has ramps up which cams on the underside of the cover run when the cover is rotated.  Thus the cover is raised in relation to the diaphragm and takes the pin fitted at the centre of the diaphragm with it.  This produces the desired suction effect.
Patent CA-2104327-A1 (CA)
Title: Surgical Apparatus for Removing Fasteners
Inventor: TOSO KENNETH E
IPC: A61B17/076
Filed: 1993-08-18
Abstract: A surgical apparatus for removing fasteners from the body includes a pair of fastener removing members which are configured and dimensioned to contact the legs of a fastener to be removed. The legs are then forced apart so as to caused the fastener legs to deform to a configuration suitable for removable from the body.
Patent CA-2105517-A1 (CA)
Title: Cylinder head water cavity flow test apparatus and method
Inventor: BEGGS ORRIN P
IPC: G01M99/00
Filed: 1993-09-03
Abstract: ABSTRACT A cylinder head flow test apparatus and method for testing cylinder heads for blockages in water passages wherein blockages in the water passages contained in the cylinder head can be detected by blowing low pressure air at a high velocity into the water passages and measuring the resulting back pressure produced by restrictions within the water passages. The disclosed method and apparatus include means for selectively testing the water passages in a cylinder head and for comparing the back pressure readings obtained from the test to back pressure readings previously obtained from a cylinder head whose water passages are known to have no blockages. An apparatus and method are also disclosed for simultaneously testing all water passages in a cylinder head for blockages.
Patent CA-2107733-A1 (CA)
Inventor: MICHEL JEAN
IPC: H03F3/60
Filed: 1993-10-05
Abstract: A wideband high-frequency power amplifier, of the type including an amplifier stage with at least two transistors mounted as a differential stage coupled at the input and at the output to a matching circuit, further includes, for leading in each bias voltage on to the amplifier stage (22), at least one segment of high-frequency transmission line (36, 37, 45, 46) of length close to a quarter-wavelength of the carrier of the signal to be amplified, the impedance of which, brought back in parallel with each transistor (T3, T4) is negligible with regard to the high frequencies, and the series impedance of which is negligible in the base band of the signal to be amplified; the line segments (36, 37, 45, 46) leading in the bias voltages on to the input of each transistor (T3, T4) being identical to each other in terms of length and impedance, as are the line segments leading in the bias voltages on to the output of each transistor (T3, T4). Application: television signal transmitters. <IMAGE>
Patent CA-2108129-A1 (CA)
Title: Transmit/receive module
Inventor: FELDLE HEINZ-PETER
IPC: H04B1/52
Filed: 1992-07-08
Abstract: The invention concerns a transmit/receive module for high-frequency signals, in particular for radar installations op-erating in the transmission-power range 0.5 to 12 W. The trans-mit/receive module proposed preferably uses no circulator.    This makes it possible for a preferred embodiment to use plan-ar circuit techniques. The transmit/receive module is particu-larly suitable for use in phased-array antenna assemblies.
Patent CA-2108401-A1 (CA)
Title: Receptor induced by lymphocyte activation in imflammatory response
Inventor: LOTZ MARTIN
IPC: C07K14/715
Filed: 1993-10-14
Abstract: ABSTRACT   A receptor (ILA) isolated and substantially purified from lymphoid cells activated with proinflammatory agents is disclosed along with its nucleotide and amino acid sequences. Also disclosed are diagnostic and therapeutic methods of utilizing the ILA nucleotide and polypeptide sequences. ILA is also induced in primary chondrocytes by 11-1.beta. and cytokines that cause cartilage degradation.
Patent CA-2110538-A1 (CA)
Title: Systeme d'information multimedia
Inventor: LACQUIT HUBERT
IPC: G06F17/30
Filed: 1993-12-02
Abstract: Système d'information multimédia Un système d'information multimédia (1) pour la gestion de données hétérogènes ayant des structures différentes et réparties sur des gérants spécialisés (2,3,4) de telles données, dans lequel lesdites données sont représentées par un modèle de données orienté objet comprenant une première classe décrivant des propriétés communes à l'ensemble des objets manipulés par le système d'information, caractérisé en ce que ledit modèle orienté objet comprend en outre une seconde classe décrivant des propriétés relatives à l'exploitation des fonctionnalités des gérants de telles données et en ce que ladite première classe comporte une propriété qui référence au moins une instance de ladite seconde classe. Figure à publier : Figure 1
Patent CA-2111192-A1 (CA)
Title: Supported high activity polyolefin catalyst component with regular distribution of magnesium values provided utilizing a controlled drying protocol
Inventor: BUEHLER CHARLES K
IPC: B05B1/16
Filed: 1992-06-19
Abstract: A novel catalyst support and a method for preparation thereof, characterized by the presence of selected amounts of a hydrocarbon soluble magnesium-containing compound applied to the support relative to solvent, wherein a surface uniformly and essentially continuously moistened with the solvated magnesium compound is achieved in a condition of incipient precipitation to permit the formation of a regular essentially continuous distribution of the magnesium compound onto and conforming to the support material. The drying process under these conditions is effective in maintaining to a high degree the effective surface area and pore volume of the material. The support containing the adsorbed magnesium in then dried in a controlled manner to essential incipient wetness conditions providing a regular spatial distribution of stacked reticular magnesium values at a level of one to five molecular monolayers on the support. A representative process for polymerizing or copolymerizing olefins providing stereospecific polymers such as propylene is disclosed.
Patent CA-2112883-A1 (CA)
Title: Wall clothes rack
Inventor: SEGIMON ESCOBEDO FRANCISCO JOS
IPC: A47G25/18
Filed: 1994-01-05
Abstract: ABSTRACT         The present invention refers to an improved wall clothes rack, the object of which is to build a support link for articles of clothing and other accessories.  The wall clothes rack includes a pivotable hanger unit and a vertically placed mirror.  The hanger unit is attachable to a wall by way of wall fasteners through circular perforations, by which the clothes rack is suspended upon the wall.
Patent CA-2113260-A1 (CA)
Title: Hand held powered rotary sweeper with belt mounted blades
Inventor: SUND LLOYD P
IPC: E01H5/04
Filed: 1992-07-07
Abstract: A readily portable power sweeping tool comprising an elongate broom with power generation means at one end and a sweeper attachment at the other.  A sweeping attachment is also described. There is at least one drive shaft, and a power transmission means that extends between the power generation means and the drive shaft for transmitting power generated by the power generation means to the drive shaft. The sweeper attachment includes a pair of sweepers mounted for rotation by a pair of drive shaft ends, the sweepers including a plurality of pliant sweeping elements extending radially outwardly therefrom. The sweeper attachment may include a support formed by mating two substantially identical drum members to each other end-to-end to form a support for a sweeper belt having a plurality of outwardly directed sweeping elements.
Patent CA-2114235-A1 (CA)
Title: Communications protocol for well-logging digital telemetry system
Inventor: MONTGOMERY MICHAEL A
IPC: E21B47/12
Filed: 1992-09-04
Abstract: The present invention relates to a communications proto-cot for a digital telemetry system which enables more efficient digital data transmission between a plurality of digital commu-nications nodes: The protocol is implemented using uplink and downlink packets and superpackets. Each node forms an up-link packet which contains node data and protocols. Those packets are packaged into uplink superpackets and transmitted to a control node. Downlink superpackets containing informa-tion signifying which of the uplink superpackets were received correctly are formed and transmitted to the individual nodes. In response, any uplink superpacket received incorrectly is retrans-mitted. Additionally, the communications protocol also time stamps messages received from the nodes to provide for digital communications time correlation.
Patent CA-2123911-A1 (CA)
Title: Eye Fixation Device
Inventor: SHER NEAL A
IPC: A61B17/30
Filed: 1992-11-16
Abstract: An ophthalmic instrument for fixating a patient's eye during an ophthalmic procedure. The instrument includes a speculum (20) securable against the patient's bony orbit, and fixation ring (60) attachable to the patient's eye, the ring including both a mechanism (22) for fixating the ring with respect to the eye, and a mechanism (66) for adjustably attaching the ring to the speculum. The instrument may include one or more bubble-type levels (62) carried on the fixation ring for indicating the orientation of the ring and assisting the surgeon in orienting the eye of the patient before securing the ring to the speculum.
Patent CA-2125787-A1 (CA)
Title: Detection of alzheimer's disease and other diseases using a photoaffinity labeling method
Inventor: HALEY BOYD E
IPC: G01N33/60
Filed: 1992-12-23
Abstract: A method for diagnosing a neurological disease comprising detecting a neurological disease-specific biochemical marker macromolecule within a sample of extracted cerebral spinal fluid is disclosed.  In particular. a radioactively labeled photoaffinity probe is used to diagnose a neurological disease. For instance, Alzheimer's disease can be diagnosed by detecting a disease-specific protein having a molecular weight of about 42,000 daltons, i.e., glutamine synthetase.
Patent CA-2125793-A1 (CA)
Title: Organic compounds
Inventor: BELLI DOMINIQUE C A
IPC: A23C23/00
Filed: 1994-06-14
Abstract: ORGANIC COMPOUNDS            ABSTRACT   The use of cow's milk protein hydrolysate substantially free of allergenic proteins to induce cow's milk protein tolerance in children susceptible to cow's milk allergy and in the prophylaxis or treatment of type 1 diabetes mellitus in children susceptible to such disease.
Patent CA-2127622-A1 (CA)
Title: Syringe assembly
Inventor: KUROSE KATSUTOSHI
IPC: A61M5/32
Filed: 1994-07-08
Abstract: Abstract of the Disclosure A syringe assembly includes a syringe body, and a plunger having a main body and a gasket mounted on its distal end portion.  A needle-mounting member is detachably mounted on a distal end portion of the plunger main body.  A plunger-engaging mechanism is pro-vided on the needle-mounting member.  An engaging member is provided on a distal end of the gasket, for engaging with the plunger-engaging mechanism.  The needle-mounting member and the plunger further have a first structure which transmits a torque from the plunger in a direction to release an engagement between the syringe main body and the needle-mounting member to the needle-mounting member, and a second structure which releases an engagement between the engaging member and the plunger-engaging mechanism through a rotation of the plunger in a direction to keep an engagement between the needle-mounting member and the plunger main body.
Patent CA-2127624-A1 (CA)
Title: Herbicides
Inventor: HAYLOR BARRY DAVID G
IPC: C07D471/04
Filed: 1994-07-08
Abstract: ABSTRACT            The invention provides compounds of formula:       wherein R and R1 independently represent hydrogen, optionally halogenated allyl alkenyl or alkynyl; -(-CR3R4)n-(optionally substituted phenyl); -(-CR3R4)nHet; or -(-CR3R4)n-Ar, wherein Ar is an optionally substituted bicycle;      wherein at least one of the groups R and R1 represents -(-CR3R4)n-Ar;      R2 represents R5 or optionally substituted phenyl; X is oxygen or sulphur; m is 0, 1, 2 or 3; R3 and R4, independently represent hydrogen, allyl or haloalkyl;      R5 is halogen, optionally halogenated alkyl, alkenyl or alkynyl; or a group selected from cyano, nitro, -CO2R6, -S(O)pR6, -NR3R4, -COR6, -S(O)pR7, -CO2R7, -OR7, -CONR3R4, -OSO2R7, -OSO2R8, -OCH2R7, -N(R3)COR8, -N(R3)SO2R8, -N(R3)SO2R7, -SO2NR3R4, -Si(R8)3 and-OR6; n is zero, 1 or 2; q is zero or an integer from 1 to 5; Het represents an optionally substituted heterocycle; R6 represents hydrogen, allyl or haloalkyl; p is zero, one or two; r is one or two; R7 represents optionally substituted phenyl; R8 represents allyl or haloalkyl; R61 and R62 independently represent hydrogen, halogen, allyl or haloalkyl; and agriculturally acceptable salts thereof; which possess utility  as herbicides.
Patent CA-2128085-A1 (CA)
Inventor: FOUTS ROBERT E
IPC: F28F9/26
Filed: 1992-09-04
Abstract: A modular cooler having a plurality of units (10) which can be interconnected in a leak proof manner yet providing fluid flow therebetween. The cooler can be an oil or transmission fluid cooler and any suitable number of units (10) may be stacked. Thus, a single unit (10) can be used in conjunction with like units to provide any desired degree of cooling.
Patent CA-2129375-A1 (CA)
Title: Exhaust vent cover
Inventor: WARD JOHN FREDERICK
IPC: F24F13/14
Filed: 1994-08-03
Abstract: An exhaust vent cover for closing the exhaust vent when the exhaust vent is not in use is shown. The exhaust vent cover includes a peripheral flange for attaching the cover to a surface and a continuous hollow body extending upwardly from the flange and having an open front as well as an air passageway communicating with this open front. The continuous hollow body further includes an overhang extending beyond the open front, a grill covering the open front to prevent access to the inside of the continuous hollow body, and a valve located inside the hollow body across the air passageway. The exhaust vent cover also includes a sloped upper surface to prevent the valve from being blown open.
Patent CA-2131756-A1 (CA)
Title: Curing component for epoxy resins
Inventor: NEUMANN UWE
IPC: C08G14/06
Filed: 1994-09-09
Abstract: Abstract of the Disclosure Curing components containing amino groups for curing epoxy resins are obtained by the reaction of alkylated polyhydroxy  aromatics  (A)  with  polyamines  (B)  and aldehydes (C) by the mechanism of the Mannich reaction. The  preparation  of  curable  mixtures  and  varnish formulations is also disclosed.  The curing components and curable mixtures can also be employed at a low temperature.
Patent CA-2133171-A1 (CA)
Title: Electrical connector hold down anchor apparatus
Inventor: ORTEGA JOSE L
IPC: H01R12/55
Filed: 1994-09-28
Abstract: ELECTRICAL CONNECTOR HOLD DOWN ANCHOR APPARATUS                 Abstract of the Disclosure An electrical connector hold down apparatus is provided for engaging a side wall defining a hole in a printed circuit board to secure the electrical connector to the printed circuit board.  The apparatus includes a base, and a plurality of spring beams extending away from the base.  Each spring beam includes a body portion and an anchor tip portion.  The anchor tip portions include a ramp surface configured to engage the side wall defining the hole in the printed circuit board and to move the spring beams radially inwardly so that the spring beams apply a radially outwardly directed force against the side wall to hold the apparatus within the hole.  The anchor tip portions also include a barb formed on a trailing end of the ramp surface.  The barbs are configured to penetrate the side wall defining the hole in the printed circuit board to increase a retention force of the hold down apparatus in the hole.
Patent CA-2134311-A1 (CA)
Title: Cartridge for in-line microwave warming apparatus
Inventor: CARR KENNETH L
IPC: F24H1/10
Filed: 1994-10-25
Abstract: A fluid flow cartridge for seating in an opening into a microwave heating cavity comprises a tubing support having an electrically conductive surface dimensioned to substantially close that opening and an elongated bobbin portion projecting from that surface. The cartridge also includes a selected length of tubing wound around the bobbin portion to form a coil, opposite end segments of the tubing extending from the coil through the conductive support surface and away from said support.  Preferably, the coil has straight tubing segments on opposite sides of the coil spaced apart one quarter wavelength or integral multiple thereof at the operating frequency of the heating cavity.